Air circulation: 1 entrance, 4 windows, 6 mesh panels. Double-layer coated fabric, sealed seams, 4 poles, 10 stakes, 4 ropes. Packs to 25.6×8.3×8.5 inches, 15.3 lbs. Floor 121.3×109.4 inches, fits 6 sleeping bags or 2 queen mattresses. Easy assembly.